The United States used to be a powerhouse in terms of highest incomes around the world, but a lot can change in 30 years.

A study by the New York Times reveals the country is no longer No. 1 in terms of highest income for the middle-class and poor residents, but it maintains a strong lead in the incomes of richest citizens. Canada has pulled ahead and grabbed the first spot.

See above for the numbers and a look at how wide the income inequality gap has grown.

Many factors play into this change, according to the Times, including a higher pay to executives in the United States and a lower minimum wage than other countries.

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Most notable, however, is that the median income in the United States has not changed much since 2000 - .3 perent, to be exact. In Britain and Canada it grew 19.7 percent.

The report is a result of surveys taken over the past 35 years and measured income groups in terms of percentile of income distribution. It shows that, for now, America is a great place for the wealthy, who make 20-50 percent more than rich counterparts around the world.